GB503147A - Improvements in or relating to telecommunication exchange systems - Google Patents

Improvements in or relating to telecommunication exchange systems

Info

Publication number
GB503147A
GB503147A GB2662437A GB2662437A GB503147A GB 503147 A GB503147 A GB 503147A GB 2662437 A GB2662437 A GB 2662437A GB 2662437 A GB2662437 A GB 2662437A GB 503147 A GB503147 A GB 503147A
Authority
GB
United Kingdom
Prior art keywords
finders
energizes
group
primary
finder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2662437A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL49969D priority Critical patent/NL49969C/xx
Application filed by Individual filed Critical Individual
Priority to GB2662437A priority patent/GB503147A/en
Priority to CH230161D priority patent/CH230161A/de
Publication of GB503147A publication Critical patent/GB503147A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
GB2662437A 1937-10-01 1937-10-01 Improvements in or relating to telecommunication exchange systems Expired GB503147A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL49969D NL49969C (en:Method) 1937-10-01
GB2662437A GB503147A (en) 1937-10-01 1937-10-01 Improvements in or relating to telecommunication exchange systems
CH230161D CH230161A (de) 1937-10-01 1937-10-09 Amtseinrichtung für Fernmeldeanlagen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2662437A GB503147A (en) 1937-10-01 1937-10-01 Improvements in or relating to telecommunication exchange systems

Publications (1)

Publication Number Publication Date
GB503147A true GB503147A (en) 1939-04-03

Family

ID=10246557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2662437A Expired GB503147A (en) 1937-10-01 1937-10-01 Improvements in or relating to telecommunication exchange systems

Country Status (3)

Country Link
CH (1) CH230161A (en:Method)
GB (1) GB503147A (en:Method)
NL (1) NL49969C (en:Method)

Also Published As

Publication number Publication date
NL49969C (en:Method)
CH230161A (de) 1943-12-15

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